Apparatuses and methods for improving disk pack balancing in disk drives including methods for centering disk clamps
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United States of America Patent
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Dec 11, 2007
Grant Date -
N/A
app pub date -
Sep 29, 2004
filing date -
Oct 7, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Apparatuses and methods for improving disk pack balancing are provided including methods for centering disk clamps. One method to center a clamp is to modify the construction of the disk clamp to incorporate a centering flange located on the inner diameter and near an upper surface of the clamp. The hub assembly may also be modified to include an upper chamfer and an annular groove or notch to reduce the amount of potential surface contact between the centering flange of the disk and the outer diameter of the hub, thereby minimizing contamination caused by contact between the disk clamp and hub. Another method for improving disk pack balancing as well as general disk pack robustness is use of a modified hub assembly construction wherein an over-molded section includes a plurality of centering tabs that precisely align spacers and data storage disks within the disk pack.
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